Add 27/7 and 21/90
1st number: 3 6/7, 2nd number: 21/90
27/7 + 21/90 is 859/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
27/7 = 27 × 90/7 × 90 = 2430/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Add the two like fractions:
2430/630 + 147/630 = 2430 + 147/630 = 2577/630 - 2577/630 simplified gives 859/210
- So, 27/7 + 21/90 = 859/210
In mixed form: 419/210
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